Rounding Calculator
Round a number to any number of decimal places, up or down.
Rounded (nearest)
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Rounded up
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Rounded down
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Truncated (cut off)
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Results update as you type.
About this calculator
A rounding calculator rounds a number to a chosen number of decimal places. It shows the standard nearest-value rounding as well as always-up (ceiling) and always-down (floor) results, so you can see every option at once. Use a negative number of places to round to tens, hundreds and beyond.
Frequently asked questions
How does rounding to decimal places work?
Look at the digit just past the cut-off: 5 or more rounds up, less than 5 rounds down. 3.14159 to two places is 3.14.
What does a negative number of decimal places do?
It rounds to the left of the decimal point: −1 rounds to the nearest ten, −2 to the nearest hundred. 3457 to −2 places is 3500.
Results are estimates for general guidance only, not financial, medical or tax advice.